Re: [Boost-users] base64_from_binary Q

From: Terdale, Shantibhushan (STerdale_at_[hidden])
Date: 2008-08-26 14:17:25

Is there any possibility that we can extend this and use it for any
data?
 
Also does anyone know where is the documentation for both
transform_width and base64 iterator where I can find their usage? I
struggled a lot to get this example working.

________________________________

From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Eames, Andrew
Sent: Tuesday, August 26, 2008 1:48 PM
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] base64_from_binary Q

I reported this problem a few months ago - apparently it is a feature
that this only works on input data that is a multiple of 3 bytes long

  Andrew

 

From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Terdale,
Shantibhushan
Sent: Tuesday, August 26, 2008 12:16 PM
To: boost-users_at_[hidden]
Subject: [Boost-users] base64_from_binary Q

 

I am using this sample to prove myself that base64_from_binary and
binary_from_base64 can be used in my app. But I am having little problem
and not able to understand whats missing

 

Here is the sample

 

#include "boost/archive/iterators/base64_from_binary.hpp"

#include "boost/archive/iterators/binary_from_base64.hpp"

#include "boost/archive/iterators/transform_width.hpp"

#include <string>

#include <iostream>

using namespace std;

using namespace boost::archive::iterators;

typedef

base64_from_binary<

transform_width<std::string::iterator, 6, sizeof(char) * 8>

> base64_t;

typedef

transform_width<

binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6

> binary_t;

int main()

{

string str = "Hello, world!";

cout << str << endl;

string enc(base64_t(str.begin()), base64_t(str.end()));    // Problem
here. It works when I specify "str.end()-1" instead of "str.end()" but I
loose last character after decoding.

cout << enc << endl;

string dec(binary_t(enc.begin()), binary_t(enc.end()));

cout << dec << endl;

return 0;

}

Will appreciate any help.  I tried std::copy as well and have same
problem.